{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:GKHJZCCWH3AU7BUM2667QJJ4BQ","short_pith_number":"pith:GKHJZCCW","canonical_record":{"source":{"id":"astro-ph/0401464","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-22T15:16:16Z","cross_cats_sorted":[],"title_canon_sha256":"0e694407918b25a365aaf9267df71b3d517c459283956a606c5d6598d5d33e4c","abstract_canon_sha256":"32817de7dcaa32be84245cada4a8be1c8b8bc72252532af352bc77986d6e9c08"},"schema_version":"1.0"},"canonical_sha256":"328e9c88563ec14f868cd7bdf8253c0c2a0ec370c704014dce1094fb5baac3fc","source":{"kind":"arxiv","id":"astro-ph/0401464","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0401464","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0401464v1","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0401464","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"pith_short_12","alias_value":"GKHJZCCWH3AU","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"pith_short_16","alias_value":"GKHJZCCWH3AU7BUM","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"pith_short_8","alias_value":"GKHJZCCW","created_at":"2026-07-04T14:13:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:GKHJZCCWH3AU7BUM2667QJJ4BQ","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0401464","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-22T15:16:16Z","cross_cats_sorted":[],"title_canon_sha256":"0e694407918b25a365aaf9267df71b3d517c459283956a606c5d6598d5d33e4c","abstract_canon_sha256":"32817de7dcaa32be84245cada4a8be1c8b8bc72252532af352bc77986d6e9c08"},"schema_version":"1.0"},"canonical_sha256":"328e9c88563ec14f868cd7bdf8253c0c2a0ec370c704014dce1094fb5baac3fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:13:18.176043Z","signature_b64":"a64yEtgbBNoP9xtjR1+nPjOkZ/5k1FxgO/x3/OKB55gIlF00+8f8Wkvkw13vYH598yKHHkrRXoZO0bdiKANnAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"328e9c88563ec14f868cd7bdf8253c0c2a0ec370c704014dce1094fb5baac3fc","last_reissued_at":"2026-07-04T14:13:18.175542Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:13:18.175542Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0401464","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T14:13:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8lYZBrqTxwNgqlTPIcxLFiPRIMdMhBLHN2I/QqmQSYsRhNHG9UTZZSXE8KW4VYYYpiOoAuuNq4rpXCJC73fFAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T06:21:09.570953Z"},"content_sha256":"9813ef8bed03520c52376e450ce7d643c1c54d4f97376c64b422ad50eba649a6","schema_version":"1.0","event_id":"sha256:9813ef8bed03520c52376e450ce7d643c1c54d4f97376c64b422ad50eba649a6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:GKHJZCCWH3AU7BUM2667QJJ4BQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The orbital resonance model for twin peak kHz QPOs","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Gabriel Torok, Marek A. Abramowicz, Wlodek Kluzniak, Zdenek Stuchlik","submitted_at":"2004-01-22T15:16:16Z","abstract_excerpt":"Many Galactic black hole and neutron star sources in low X-ray mass binaries show QPOs (quasi periodic oscillations) in their observed X-ray fluxes, i.e. peaks in the Fourier variability power spectra. Pairs of twin peaks are observed, and in black-hole systems their frequencies (upp), (down) are in rational ratios. For example, in all four microquasars with twin peaks observed, (upp):(down) = 3:2. The rational ratios have been postulated in a model that explained twin peak QPOs as a non-linear resonance between modes of accretion disk oscillations. For those microquasars where the mass of the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0401464","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0401464/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T14:13:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e/imAWX1ZO+QGTyPNIz+Hz/MT1zKAz+3EA7zY89+G4fJdE6WxDtMBKWLkhMFpHUwqhotNKdTqC8apazPC9zYAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T06:21:09.571429Z"},"content_sha256":"b5fd92f9bb850819001fb1d9e0616465ac028a10a449529b0fe63227d10b65ed","schema_version":"1.0","event_id":"sha256:b5fd92f9bb850819001fb1d9e0616465ac028a10a449529b0fe63227d10b65ed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GKHJZCCWH3AU7BUM2667QJJ4BQ/bundle.json","state_url":"https://pith.science/pith/GKHJZCCWH3AU7BUM2667QJJ4BQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GKHJZCCWH3AU7BUM2667QJJ4BQ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-13T06:21:09Z","links":{"resolver":"https://pith.science/pith/GKHJZCCWH3AU7BUM2667QJJ4BQ","bundle":"https://pith.science/pith/GKHJZCCWH3AU7BUM2667QJJ4BQ/bundle.json","state":"https://pith.science/pith/GKHJZCCWH3AU7BUM2667QJJ4BQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GKHJZCCWH3AU7BUM2667QJJ4BQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:GKHJZCCWH3AU7BUM2667QJJ4BQ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"32817de7dcaa32be84245cada4a8be1c8b8bc72252532af352bc77986d6e9c08","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-22T15:16:16Z","title_canon_sha256":"0e694407918b25a365aaf9267df71b3d517c459283956a606c5d6598d5d33e4c"},"schema_version":"1.0","source":{"id":"astro-ph/0401464","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0401464","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0401464v1","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0401464","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"pith_short_12","alias_value":"GKHJZCCWH3AU","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"pith_short_16","alias_value":"GKHJZCCWH3AU7BUM","created_at":"2026-07-04T14:13:18Z"},{"alias_kind":"pith_short_8","alias_value":"GKHJZCCW","created_at":"2026-07-04T14:13:18Z"}],"graph_snapshots":[{"event_id":"sha256:b5fd92f9bb850819001fb1d9e0616465ac028a10a449529b0fe63227d10b65ed","target":"graph","created_at":"2026-07-04T14:13:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0401464/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Many Galactic black hole and neutron star sources in low X-ray mass binaries show QPOs (quasi periodic oscillations) in their observed X-ray fluxes, i.e. peaks in the Fourier variability power spectra. Pairs of twin peaks are observed, and in black-hole systems their frequencies (upp), (down) are in rational ratios. For example, in all four microquasars with twin peaks observed, (upp):(down) = 3:2. The rational ratios have been postulated in a model that explained twin peak QPOs as a non-linear resonance between modes of accretion disk oscillations. For those microquasars where the mass of the","authors_text":"Gabriel Torok, Marek A. Abramowicz, Wlodek Kluzniak, Zdenek Stuchlik","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-01-22T15:16:16Z","title":"The orbital resonance model for twin peak kHz QPOs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0401464","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9813ef8bed03520c52376e450ce7d643c1c54d4f97376c64b422ad50eba649a6","target":"record","created_at":"2026-07-04T14:13:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"32817de7dcaa32be84245cada4a8be1c8b8bc72252532af352bc77986d6e9c08","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-22T15:16:16Z","title_canon_sha256":"0e694407918b25a365aaf9267df71b3d517c459283956a606c5d6598d5d33e4c"},"schema_version":"1.0","source":{"id":"astro-ph/0401464","kind":"arxiv","version":1}},"canonical_sha256":"328e9c88563ec14f868cd7bdf8253c0c2a0ec370c704014dce1094fb5baac3fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"328e9c88563ec14f868cd7bdf8253c0c2a0ec370c704014dce1094fb5baac3fc","first_computed_at":"2026-07-04T14:13:18.175542Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:13:18.175542Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a64yEtgbBNoP9xtjR1+nPjOkZ/5k1FxgO/x3/OKB55gIlF00+8f8Wkvkw13vYH598yKHHkrRXoZO0bdiKANnAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T14:13:18.176043Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0401464","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9813ef8bed03520c52376e450ce7d643c1c54d4f97376c64b422ad50eba649a6","sha256:b5fd92f9bb850819001fb1d9e0616465ac028a10a449529b0fe63227d10b65ed"],"state_sha256":"16a4317211c83d89c1b92a8d7b92a438dc5b3a745ad4ea7742dabd4524b62c4e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UAXjSoHbDP5TPEbZRp3u644GZKTLH+e8VRjYfH6R2l37uEnd3g+1Gyt2DvXm11/ONsXR2E81TtOmPfJLFSRODg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T06:21:09.575502Z","bundle_sha256":"77687a1fc410f0248fc24de59b4e541edb0fdf942d78f6940def317f01d5535b"}}